Leftsider

Every time I try to insert a driver or a hotfix in NLITE the page freezes and I get the "Not Responding" message. I then have a helluva job getting NLITE to end its task. I've just installed on my test rig & it works fine (no updates applied). I've tried v3.5 and v4. I suspect a MS update has made it not work. Can anyone shed any light on this?